National Semiconductor LM2595 Simple Switcher Power Converter 150 kHz 1A Step-Down Voltage Regulator
Summary
The LM2595 is a high-efficiency, simple step-down (buck) switching regulator designed for stable power conversion from up to 40V down to fixed voltages like 3.3V, 5V, or 12V, handling loads up to 1A. Ideal for electronics designers requiring compact and reliable switch-mode power solutions. This manual provides comprehensive technical specifications, connection diagrams, operating parameters, and ordering details necessary for integrating this versatile IC into your next project.
Manual Details
| Brand | National |
|---|---|
| Pages | 29 |
| File Size | 950.63 KB |
| Published | June 17, 2026 |
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Frequently Asked Questions
What is the operating switching frequency of this regulator?
The LM2595 series operates at a fixed switching frequency of 150 kHz.
Is a heat sink needed for operation?
No heat sink is required if the ambient temperature is less than 50°C and below 12V output.
What is the maximum input voltage supported by the device?
The linear regulators support an input voltage range up to 40V.
Does it have internal protection features?
It includes thermal shutdown, current limit protection for the output switch, and over-temperature shutdown.